Top roll



April 28, 1953 E. D. MEADOWS ET AL 2,636,221

' TOP ROLL Filed Aug. 6, 1947 FIG. 5.

ERNEST 0. MEADOWS RICHARD K. WHH'EHEAD ATTORN EYS.

INVENTORS.

Patented Apr. 28, 1953 UNITED STATES PATENT OFFlCE Atlanta, Ga.,.assignors to 1 Meadows Manufacturing Company, Atlanta, Ga., acorporation of Georgia Application August 6, 1947, San No. 766,614

"" Claims. (01. 19- 142) 1 Our invention relates to rolls for particularapplication to the drafting of fibers, as in worsted spinning frames. x,

In the past, it has been the practice to apply cot material directly todrafting rolls, such as top rolls, in machines of the characterindicated. When the cots have become worn and have needed replacement,the entire roll has hadto be removedv and then immersed in a causticsolution for soaking in order to loosen the cot. Not only maythissoaking process be harmful to the bearings for the roll, but theroll-servicing operation is time consuming and means that ,a relativelylarge stock of serviced rolls must be on hand in order to minimize downtime for the machine. I V r It is, accordingly, an object of ourinvention to provide an improved roll wherein the above dimculties maybe minimized. Y N g It is another object to providean improvedtop rollin which a cot may be removed. without disturbing the adjustment of theroll in its mounting upon a shaft. 7

It is a further object to provide an improved cot-supporting structure.

Still another object is to provide an improved means for mounting a toproll on a. shaft.

Other objects and various further features of the invention will bepointed out or will occur to those skilled in the art from a reading ofthe following specification in conjunction with the accompanyingdrawings. In said drawings:

,Fig. 1 is a partially sectionalized front view of a top rollincorporating features. of theinvention, the roll being shown mounted ona roll shaft;

.Fig. 2 is a partly broken the roll of Fig. 1;

Fig. 3 is a perspective view of a part of the assembly of Figs. 1 and 2;

Fig. 4 is a fragmentary'partly secticnalized view of a top rollillustrating a modified mounting arrangement; and

Fig. 5 is a fragmentary sectionalized view-of a further modificationaccording to the invention.

Briefly stated, our invention contemplates an improved roll constructionwherein a cot is carried by a member which may be removably secured tothe body of the roll, without. disturbing the. roll in its mountedposition on the roll shaft. In the specificwform to be described, thebody ofthe roll is a machined casting. havinga generally cylindricalouter surface and ja central bore, to receive antifriction bearingmeans, The

away side view of cot is. supported on a cup which fits the generallycylindrical outer surface of the roll and which extends radially in,substantially to close off the open end of the bore. The cup, and withit of course the cot, may be readily removed by merely loosening screwsbetween the bottom oi the cup and theroll casting.

Referring to Figs. 1 2, and 3 of the drawings, our invention is shown inapplicationto a top roll it revolubly mounted on a roll shaft ilfas foruse in the drafting of .fibers 'on. a worsted spinning frame. The rollit maybe supported on the shaft H by antifriction bearing means l2 andsecured in position thereon as by snap rings lt-Hl seated in groovesl5-l5in theshaft H. In the form shown, the roll ili includes a body llwhich is preferably a casting and which for lightness may be an aluminumalloy permanentmold casting. The body ll may be formed with a generallycylindricalouter surface it and with a central bore 19, for'bearingpurposes,

Inthe form shown, the antifriction bearinglZ is a ball bearing having anouter ring 28 seated in the. bore l9 .and an inner ring 29 seated on theshaft H, against the snap. ring orshoulder l3. On one side, the bearingmeans 52 may include .a single sealing ring 22' carriedby the, outerbearing ring .20 and extending radially intofpreh erably closeclearancerelation with the inner ring 2!. On the other side of thebearingthere may be a labyrinthian seal which may. comprise a first sealmember 23 fitting the bore it and held against the outer ring 28, as bya snap ring 2 3 in the bore [9. The seal may be enhanced byjprovision,of a second seal, member 25 of L-shaped section having a cylindricalportion carried 'by..the' shaft H and. a radially outwardly extendingflange extending into clearance relation with the bore l9 and with thesnap ring it. The seal .member25 may be heldjin abutment with the innerring 2!, as by ,employment of the snap ring l4. Itwill be clear thatthering 23 rotates with the roll. Ill and that, therefore, the ring 23preferably clears. both the inner bearing ring'll. and the sealmemberlz't.

In accordance with the invention, a. cot 26 is carried by a member 21removably. secured to the main body H of theroll H]. The member 2? inthe form shown. is a cup having a generally cylindrical wall Zia-uponwhichthecot 2c is secured. The cot 26 may be of conventionalrubbereand-cork or the like combination; it may besecuredby employmentof a suitable adhesive tothelcylindrical.wallliii. In a preferred term,

the tightness of fit is improved by a roughening of the outer surface ofthe wall 28, as by the turning of a relatively shallow spiral groove 29in the outer surface thereof.

The wall 28 preferably closely forms a sliding fit with the outercylindrical surface I 8 on the body I1 of the roll. The bottom orradially extending part of the cup 21' is provided with a centralaperture 30 to permit passage of the shaft I I therethrough, and theclearance between the opening 30 and the shaft I I is preferably closefor purposes of enhancing the seal of the antifriction bearing means I2.The cup member 21, and with it the cot 26, is shown removably secured tothe body I1 by means of screws 3|, which are preferably countersunk toprovide a completely flush outer roll surface; the screws 3I may bedriven into holes 32 tapped in enlarged portions or ears 33 formed inthe body H. In the form shown, the roll I is of relatively largediameter and the casting I! is preferably, therefore, substantiallyhollowed out. Thus, the outer generally cylindrical surface I8 may beradially spaced from a hub portion 35 having the bore I9. In the senseof the drawings, the lefthand side of the body [0 forms a closed side ofthe roll to join the hub 35 with the outer cylindrical portion. so thatwhen the cup 21 is fitted, the entire roll assembly may be smooth inexternal appearance.

In Fig. 4 I show an alternative means for mounting a roll, such as theroll of Figs. 1, 2, and 3, wherein it may be desired adjustably toposition a fully assembled roll l along the mounting shaft II. Asbefore, the roll I0 may be supported by antifriction bearing means [2'fitted Within a bore I9. The inner ring 21 of the bearing, however, ispreferably seated on a sleeve 40 which includes an axially projectingportion 4! extending beyond the cot-supporting cup 21'. The projectingportion M of the sleeve 40 may carry suitable securing means, such as aset screw 42, for engagement as with a flat 43 formed on the end of theshaft II. The inner ring 2i may be positioned on the sleeve 40 by meansof a snap ring 44 holding the ring 2| against a radial shoulder 45. Inthe form shown, the outer bearing ring 20' is held in the bore [9' bymeans of a snap ring 46 pressing a pair of labyrinthian seal members41-48 against the outer ring 20'. Both seal members 47-48 and the cupmember 21' preferably extend into clearance relation with the sleeve 40.

In Fig. 5 is shown a further modification of the invention wherein a toproll 50 includes a roll member 5| having a hub 52 supported in aimplified manner by an antifriction bearing 53. The bearing means 53 mayagain comprise an inner ring 54 seated upon the shaft 55 and an outerring 56 seated in a bore within the hub 52. Seal means 51-58 for bothsides of the bearing means 53 may be formed with and carried by thebearing itself. The outer bearing ring 56 may be held in position withinthe bore in hub 52 by staking, prick-punching, swaging, or otherwiseradially inwardly deforming a part 59 of the lip of hub 52, as shown.The inner bearing ring 54 may be adjustably positioned along the shaft55 in the manner described in connection with Fig. 4, or it may befixedly located, as by snap rings 60-6|, in grooves 62-63 in the shaft55.

It will be appreciated that we have described a relatively simple rollconstruction for particular application to top rolls in which theservicing and maintenance of cots is a major problem.

In all the described forms the cot may be very easily removed withoutdisturbing the roll or its position on a shaft, and immersing of theworn cot and its supported member in caustic solution can in no way harmthe rest of the roll including the bearing. The cot-supporting structureis of such simplicity and may be made at such low cost as to make itfeasible to stock up assembled cot-supporting structures for immediatereplacement when necessary.

While we have described our invention in detail for the preferred formsshown, it will be understood that modifications may be made within thescope of the invention as defined in the appended claims.

We claim:

1. In a top roll for spinning frames and the like, a wheel assemblyincluding anti-friction -friction bearing means for supporting saidassembly on a shaft, said wheel assembly including a part extendingradially inwardly on one side of said antifriction bearing means and toan extent for relatively close clearance relation with the shaft, and acot assembly to be secured to said wheel assembly, said cot assemblyincluding a cupped member having a generally cylindrical outer surface,a cot carried by said surface, and securing means between the cuppedpart of said member and said wheel assembly, said cupped memberincluding a part extending radially inwardly on the other side of saidantifriction bear ing means and to an extent for relatively closeclearance relation with theshaft.

2. In a device of the character indicated, for spinning frames and thelike, a roll including a body having a cylindrical outer surface andincluding a hub, said body having a closed side and an open side withthe hub supported by the closed side, said hub having a bore facing saidopen side, antifriction bearing means in said bore for supporting saidroll on a shaft, and a cup having a cylindrical cot-supporting portionto fit said cylindrical surface and a bottom extending over the openside of said bore.

3. In a top roll for spinning frames and the like, a roll body includinga cylindrical outer surface and having a central bore substantiallyclosed on one side and open on the other side,

antifriction bearing means including an outer and an inner ring, saidouter ring being seated in said bore, and a cot-supporting cup includingan annular portion fitting said cylindrical surface and a bottom portionextending radially inwardly substantially to the inner diameter of saidinner bearingring in order substantially to close the open side of saidbore.

4. In a device of the character indicated for spinning frames or thelike, a roll having a bearing-receiving bore substantially closed on oneside and open on the other side, said roll havinga cylindricalperiphery, and a cot-supporting cup including a cylindrical bore fittingover the outer cylindrical periphery of said roll and having a radiallyinwardly directed disc flange to partially close the open side of saidbearing-receiving bore.

5. A device according to claim 4, and including antifriction bearingmeans in said bearing receiving bore, a mounting sleeve for support upona shaft, said sleeve including shoulder means for said antifrictionbearing means, said sleeve including an axially projecting portionprojecting axially beyond said cup, and securing means carried by saidprojecting portion for locking said projecting portion to a shaft. I

6. In a device of the character indicated for spinning frames and thelike, a roll including a cylindrical outer surface and having a centralbore, antifriction bearing means in said bore, said antiiriction bearingmeans including outer ring fitting said bore, said roll including aradially inwardly deformed portion extending radially inward of a partof said outer ring for retaining said ring in said bore, and acotsupporting cup fitting over said cylindrical surface and removablysecured to said roll.

7. In a roll for spinning frames and the like, a roll body member to berevolubly supported on a shaft and including a substantially fiat end extending radially inwardly for relatively close running clearancerelation with the shaft, said body member including a cylindricalperipheral surface and having a bore open to the other end to insertablyreceive bearing means, a cup shaped member of sheet material including acylindrical cot-supporting part closely fitting over the cylindricalperipheral surface of said body member, said cup-shaped member furtherincluding a substantially fiat bottom substantially closing the open endof said bore and With a central opening for relatively close runningclearance relation With the shaft, and means axially securing the bottomof said cup-shaped member to said body member, whereby no matter howtight said securing means may be set there need be no stressing of thecot-supporting part of said cup-shaped member.

8. In a top roll for spinning frames and the like, a roll body includinga generally radial disc end and a cylindrical rim at the periphery ofsaid disc end and extending toward the other end of said body, a centralhub for a bearing carried by said disc end, a cot-supporting membercomprising a cylindrical sleeve fitting over the outer surface of saidcylindrical rim and overlapping said other end of said body, said sleeveat the end opposite said disc end having a generally radial inturneddisc flange extending over said other end of said body and having acentral shaft passage, and means for securing said disc flange to saidrim for holding said roll body and said cotsupporting member together.

9. In the combination defined in claim 8, said cot-supporting sleevehaving a roughened outer surface to assist in holding a cot thereon.

10. In a device of the character indicated for spinning frames and thelike, a roll having a bore for receiving an antifriction bearingincluding inner and outer rings with the outer ring fitting in saidbore, a sleeve having a bore to receive a shaft and having an outercylindrical surface received in the bore of the inner bearing ring ofsaid antifriction bearing, means for securing the inner ring to saidsleeve, and means carried by said sleeve and accessible externally ofsaid roll for securing said sleeve to a shaft for locating and holdingthe entire device on a shaft.

ERNEST D. MEADOWS. RICHARD K. WHITEHEAD.

References Cited in the file Of this patent UNITED STATES PATENTS NumberName Date 395,938 Wright Jan. 8, 1889 981,307 Ragsdale Jan. 10, 19112,072,451 Hughes Mar. 2, 1937 2,267,443 Cobb Dec. 23, 1941 2,415,578Courtney Feb. 11, 1947 2,417,239 Courtney Mar. 11, 1947 FOREIGN PATENTSNumber Country Date 15,335 Great Britain of 1904 144,940 Great BritainJune 24, 1920 237,482 Great Britain July 30, 1925 592,743 France Aug. 8,1925

